One of the children struck by an SUV in the Waukesha tragedy has died. 13 more are still hospitalized.

• A red SUV drove through a Christmas parade in Waukesha, Wisconsin, on Sunday.
• The incident left six people dead including one child.

One child who was hit by an SUV in the Waukesha tragedy had died and 13 more are still hospitalized, the Children's Hospital of Wisconsin said in an email to Insider.

On Tuesday, the Milwaukee Journal Sentinel reported that 8-year-old Jackson Sparks, who was marching in the parade with his baseball team, died in the hospital. Sparks' death was confirmed by his team and church.

Sparks' 12-year-old brother, Tucker, was also hospitalized.

Children's Wisconsin said 16 children were admitted to their hospital for injuries from Sunday's tragedy. Hospital officials told Insider that 18 children were initially brought into the hospital, but two were given treatment and did not have to be fully admitted into the hospital.

On Monday, officials said the children admitted to the hospital were between 3 and 16 years old. Injuries included broken bones, facial abrasions, and "serious head injuries."

Of the 13 kids still in the hospital, six are in critical condition, three are in fair condition, and four are in good condition, the hospital said on Tuesday.

"Children's extends its condolences and care to all those affected by this tragedy," the hospital said.

The facility has also established a Mental and Behavioral Health Helpline, (414) 266-6500, for families looking for additional support.

On Sunday, a red SUV drove through barricades and smashed into crowds of people at a Christmas parade in Waukesha, Wisconsin.

At a press briefing on Monday afternoon, Waukesha Police Chief Daniel Thompson said suspect Darrell E. Brooks, 39, "intentionally" drove into the crowd. Thompson said Brooks was in a domestic dispute before the incident.

Police said five others were confirmed dead: Tamara Durand, 52, Jane Kulich, 52, LeAnna Owen, 71, Virginia Sorenson, 79, and Wilhelm Hospel, 81.

More than 60 people were injured in the tragedy. In a criminal complaint filed on Tuesday, an officer called the incident "an intentional act to strike and hurt as many people as possible."

According to the complaint, one witness told a detective: "As I continued to watch the SUV, it continued to drive in a zig-zag motion. It was like the SUV was trying to avoid vehicles, not people. There was no attempt made by the vehicle to stop, much less slow down."